[agd5f:drm-next 20/53] drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_dpm_internal.c:29:6: warning: no previous prototype for 'amdgpu_dpm_get_active_displays'

[kernel test robot]

tree:   https://gitlab.freedesktop.org/agd5f/linux.git drm-next
head:   ec1289d5cf9f8b8872ed8b9e57130d27938faccf
commit: 855b49a8859f07dc29076c3a301888b39550c362 [20/53] drm/amd/pm: optimize the amdgpu_pm_compute_clocks() implementations
config: arm64-randconfig-r016-20220108 (https://download.01.org/0day-ci/archive/20220109/202201090201.ed6mhBaD-lkp@xxxxxxxxx/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git
        git fetch --no-tags agd5f drm-next
        git checkout 855b49a8859f07dc29076c3a301888b39550c362
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_dpm_internal.c:29:6: warning: no previous prototype for 'amdgpu_dpm_get_active_displays' [-Wmissing-prototypes]
      29 | void amdgpu_dpm_get_active_displays(struct amdgpu_device *adev)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_dpm_internal.c:76:5: warning: no previous prototype for 'amdgpu_dpm_get_vrefresh' [-Wmissing-prototypes]
      76 | u32 amdgpu_dpm_get_vrefresh(struct amdgpu_device *adev)
         |     ^~~~~~~~~~~~~~~~~~~~~~~


vim +/amdgpu_dpm_get_active_displays +29 drivers/gpu/drm/amd/amdgpu/../pm/amdgpu_dpm_internal.c

    28	
  > 29	void amdgpu_dpm_get_active_displays(struct amdgpu_device *adev)
    30	{
    31		struct drm_device *ddev = adev_to_drm(adev);
    32		struct drm_crtc *crtc;
    33		struct amdgpu_crtc *amdgpu_crtc;
    34	
    35		adev->pm.dpm.new_active_crtcs = 0;
    36		adev->pm.dpm.new_active_crtc_count = 0;
    37		if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
    38			list_for_each_entry(crtc,
    39					    &ddev->mode_config.crtc_list, head) {
    40				amdgpu_crtc = to_amdgpu_crtc(crtc);
    41				if (amdgpu_crtc->enabled) {
    42					adev->pm.dpm.new_active_crtcs |= (1 << amdgpu_crtc->crtc_id);
    43					adev->pm.dpm.new_active_crtc_count++;
    44				}
    45			}
    46		}
    47	}
    48	
    49	u32 amdgpu_dpm_get_vblank_time(struct amdgpu_device *adev)
    50	{
    51		struct drm_device *dev = adev_to_drm(adev);
    52		struct drm_crtc *crtc;
    53		struct amdgpu_crtc *amdgpu_crtc;
    54		u32 vblank_in_pixels;
    55		u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */
    56	
    57		if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
    58			list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
    59				amdgpu_crtc = to_amdgpu_crtc(crtc);
    60				if (crtc->enabled && amdgpu_crtc->enabled && amdgpu_crtc->hw_mode.clock) {
    61					vblank_in_pixels =
    62						amdgpu_crtc->hw_mode.crtc_htotal *
    63						(amdgpu_crtc->hw_mode.crtc_vblank_end -
    64						amdgpu_crtc->hw_mode.crtc_vdisplay +
    65						(amdgpu_crtc->v_border * 2));
    66	
    67					vblank_time_us = vblank_in_pixels * 1000 / amdgpu_crtc->hw_mode.clock;
    68					break;
    69				}
    70			}
    71		}
    72	
    73		return vblank_time_us;
    74	}
    75	
  > 76	u32 amdgpu_dpm_get_vrefresh(struct amdgpu_device *adev)

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